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Gem Cutting FAQ

Our gem cutting FAQ covers some common questions from novice faceters. Topics include how to get started, how to clean gemstones, and dopping issues.…


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Gemstone Encyclopedia
Our Gemstone Encyclopedia has information on over 300 gemstones, from traditional and popular jewelry standards to collector’s stones that rarely appear for sale. Each entry has photos and detailed information about the gem’s properties. Entries for jewelry stones also have price guidelines and discussions of their most important value factors.
Emerald has been synonymous with the color green since ancient times. A fine emerald is a truly breathtaking sight, and this member of the beryl family deserves its placement among the traditional “Big Four” gems along with diamond, ruby, and sapphire.
For millennia, artisans have carved intricate cameos from black-and-white onyx. Solid black onyxes, faceted or cabbed, are also popular jewelry stones.
Few gems have held our attention over millennia as well as sapphire. The pure blue colors and excellent durability of this gem-quality member of the corundum family make for an exceptional gemstone. However, not all sapphires are blue. The September birthstone comes in every color of the rainbow (except red).
When it comes to engagement ring stones, there’s a lot to consider. In the moissanite vs diamond debate, we’ll look at three main factors: beauty, durability, and price.
February Birthstone
Thanks to its beauty and relative abundance, the February birthstone, amethyst, is used in all types of jewelry: from the mass market to the finest custom couture pieces.
Diamond Cuts
We’ve compiled information on average costs and sizes for different diamond cuts and shapes at different carat weights. Learn how the different fancy cuts compare, and the pros and cons of different diamond cuts.
An olive to bottle-green natural glass, moldavite is a rare material popular with collectors of unusual gems as well as those interested in its formation from a meteorite impact.
January Birthstone
Although many associate January's birthstone, garnet, with the color red, they can come in a variety of colors including red, yellow, orange, green and even blue.